Re: forwarding the VTP

As far as I am aware (and someone correct me if I am wrong)...

VTP transparent mode switches will forward received advertisements if:

   - vtp version & domain name in received advertisement matches that of the
   vtp trans switch OR
   - the vtp version matches but the transparent switch has a NULL vtp
   domain

Cisco documentation does/did state that vtp v2 mode does not check vtp
version & domain name but that info needs to be updated...
Refer to:
http://ccie-in-3-months.blogspot.com/2008/07/cco-documentation-errors-vtp-v2.html

However if I were you, I'd test this using actual 3550s/3560s to verify the
above operation.

Regards
Roy

2009/4/19 Narbik Kocharians <narbikk_at_gmail.com>

> Next time instead of reloading try to create a VLAN and that would be
> enough
> to start propagation of VLANs.
>
> On Sun, Apr 19, 2009 at 11:12 AM, <aly.groupstudy_at_gmail.com> wrote:
>
> > I recently had a problem where the VTP information were not being
> > propagated.
> > I tried to find if there are configuration errors that might do it.
> >
> > 1- Make sure your trunks are up ( Obviously)
> > 2- do not hesitate to reboot the switches ( This worked for me more than
> > once
> > and I will defiantly do it in the lab if i even doubt any strange
> > behaviout)
> >
> > VTP configuration
> >
> > Cisco Documentation is really poor on this one
> > Here is what I think but need others to confirm it
> >
> > Only VTP V2 transparent mode will forward VLAN info to switches beyond
> > VTP V1 transparent mode will only forward VLAN info if the VTP domain
> > matches
> >
> > strange command I saw only recently and never even tried it ( VTP mode
> off)
> >
> > Can anyone share his experience about this new command, confirm VTP V1 vs
> > V2
> > behavior or share any of his troubleshooting experience
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
> >
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com
> www.Net-Workbooks.com
> Sr. Technical Instructor
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- 
Regards
Roy
Blogs and organic groups at http://www.ccie.net